High-Performance Lead-Free Solar Cells Based on Tin-Halide Perovskite Thin Films Functionalized by a Divalent Organic Cation

Min Chen; Qingshun Dong; Felix T. Eickemeyer; Yuhang Liu; Zhenghong Dai; Alexander D. Carl; Behzad Bahrami; Ashraful H. Chowdhury; Ronald L. Grimm; Yantao Shi; Qiquan Qiao; Shaik Mohammed Zakeeruddin; Michael Grätzel; Nitin P. Padture

doi:10.1021/acsenergylett.0c00888

High-Performance Lead-Free Solar Cells Based on Tin-Halide Perovskite Thin Films Functionalized by a Divalent Organic Cation

Min Chen, Qingshun Dong, Felix T. Eickemeyer, Yuhang Liu, Zhenghong Dai, Alexander D. Carl, Behzad Bahrami, Ashraful H. Chowdhury, Ronald L. Grimm, Yantao Shi, Qiquan Qiao, Shaik Mohammed Zakeeruddin, Michael Grätzel, Nitin P. Padture

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

Abstract

Tin-based halide perovskite solar cells (PSCs) hold the most promise among lead-free PSCs, but they are plagued with inadequate environmental stability and power-conversion efficiency (PCE). Here we demonstrate that the optimum incorporation of a bulky divalent organic cation, 4-(aminomethyl)piperidinium (4AMP), in FASnI3 thin films improves stability, optoelectronic properties, and PSC performance. The optimized PSC yields a maximum PCE of 10.9% and good 500-h operational stability under continuous illumination. This is attributed to the unique thin-film structure, where the strong ionic bonding afforded by divalent 4AMP may provide near-full-coverage functionalization (encapsulation) of FASnI3 grain surfaces and grain boundaries, retarding O2/H2O ingression and mitigating Sn-defects for reduced photocarrier nonradiative recombination.

Original language	English (US)
Pages (from-to)	2223-2230
Number of pages	8
Journal	ACS Energy Letters
Volume	5
Issue number	7
DOIs	https://doi.org/10.1021/acsenergylett.0c00888
State	Published - Jul 10 2020
Externally published	Yes

ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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10.1021/acsenergylett.0c00888

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Chen, M., Dong, Q., Eickemeyer, F. T., Liu, Y., Dai, Z., Carl, A. D., Bahrami, B., Chowdhury, A. H., Grimm, R. L., Shi, Y., Qiao, Q., Zakeeruddin, S. M., Grätzel, M., & Padture, N. P. (2020). High-Performance Lead-Free Solar Cells Based on Tin-Halide Perovskite Thin Films Functionalized by a Divalent Organic Cation. ACS Energy Letters, 5(7), 2223-2230. https://doi.org/10.1021/acsenergylett.0c00888

Chen, M, Dong, Q, Eickemeyer, FT, Liu, Y, Dai, Z, Carl, AD, Bahrami, B, Chowdhury, AH, Grimm, RL, Shi, Y, Qiao, Q, Zakeeruddin, SM, Grätzel, M & Padture, NP 2020, 'High-Performance Lead-Free Solar Cells Based on Tin-Halide Perovskite Thin Films Functionalized by a Divalent Organic Cation', ACS Energy Letters, vol. 5, no. 7, pp. 2223-2230. https://doi.org/10.1021/acsenergylett.0c00888

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abstract = "Tin-based halide perovskite solar cells (PSCs) hold the most promise among lead-free PSCs, but they are plagued with inadequate environmental stability and power-conversion efficiency (PCE). Here we demonstrate that the optimum incorporation of a bulky divalent organic cation, 4-(aminomethyl)piperidinium (4AMP), in FASnI3 thin films improves stability, optoelectronic properties, and PSC performance. The optimized PSC yields a maximum PCE of 10.9% and good 500-h operational stability under continuous illumination. This is attributed to the unique thin-film structure, where the strong ionic bonding afforded by divalent 4AMP may provide near-full-coverage functionalization (encapsulation) of FASnI3 grain surfaces and grain boundaries, retarding O2/H2O ingression and mitigating Sn-defects for reduced photocarrier nonradiative recombination.",

author = "Min Chen and Qingshun Dong and Eickemeyer, {Felix T.} and Yuhang Liu and Zhenghong Dai and Carl, {Alexander D.} and Behzad Bahrami and Chowdhury, {Ashraful H.} and Grimm, {Ronald L.} and Yantao Shi and Qiquan Qiao and Zakeeruddin, {Shaik Mohammed} and Michael Gr{\"a}tzel and Padture, {Nitin P.}",

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AU - Dai, Zhenghong

AU - Carl, Alexander D.

AU - Bahrami, Behzad

AU - Chowdhury, Ashraful H.

AU - Grimm, Ronald L.

AU - Shi, Yantao

AU - Qiao, Qiquan

AU - Zakeeruddin, Shaik Mohammed

AU - Grätzel, Michael

AU - Padture, Nitin P.

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AB - Tin-based halide perovskite solar cells (PSCs) hold the most promise among lead-free PSCs, but they are plagued with inadequate environmental stability and power-conversion efficiency (PCE). Here we demonstrate that the optimum incorporation of a bulky divalent organic cation, 4-(aminomethyl)piperidinium (4AMP), in FASnI3 thin films improves stability, optoelectronic properties, and PSC performance. The optimized PSC yields a maximum PCE of 10.9% and good 500-h operational stability under continuous illumination. This is attributed to the unique thin-film structure, where the strong ionic bonding afforded by divalent 4AMP may provide near-full-coverage functionalization (encapsulation) of FASnI3 grain surfaces and grain boundaries, retarding O2/H2O ingression and mitigating Sn-defects for reduced photocarrier nonradiative recombination.

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High-Performance Lead-Free Solar Cells Based on Tin-Halide Perovskite Thin Films Functionalized by a Divalent Organic Cation

Abstract

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